The Yeti (Main) zone is located near the peak of the ridge separating Quattrin and Yehiniko creeks at approximately 1900 metres elevation, 3.6 kilometres south-southwest of Yehiniko Lake’s southern shore.
The area is underlain by Upper Triassic rocks of the Stuhini Group. Various large intrusion surround the Stuhini rocks in the Yeti area. Tonalite intrusions of the Middle Jurassic Three Sisters Plutonic Suite occur to the north and south, granodioritic intrusions of the Late Early Cone Mountain Plutonic Suite occur to the southwest, and a large unnamed Middle to Late Triassic quartz dioritic intrusion borders the Stuhini rock on the east. The volcanic sequence consists mainly of massive to faintly feldspar- and/or pyroxene-porphyritic andesitic flows with lesser intercalated beds of siltstone, lapilli tuff and volcanic conglomerate. The beds generally strike northwest and dip moderately to the southeast. The package is not highly deformed although it is possible that north trending, vertical faults crosscut the area.
The ultramafic “Yeti” body is in contact with the Stuhini rocks on its west and north and with the large unnamed Middle to Late Triassic quartz dioritic intrusion on the east. The “Yeti” ultramafic complex is a relatively small elongate intrusive body related to the Middle to Late Triassic Polaris Ultramafic Suite. This suite is an Alaskan-type intrusion that comprise a series of mafic-ultramafic complexes concentrated in northern British Columbia. The geochemical survey reported by Toscana Resources in 1990 (Assessment Report 21168) straddled the northern part of the “Yeti” body.
Locally, propylitic, silicified and K-feldspar altered intermediate to basaltic volcanic flows, welded crystal tuff, and various hypabyssal phases of a composite tonalite intrusion host quartz-carbonate filled fractures and veins containing chalcopyrite and pyrite with minor bornite, sphalerite and galena mineralization with localized coarse native gold.
The Main Zone of the Yeti prospect lies along the immediate east side of the Main Ridge, extending from the Comfort Zone, through the Pass to the Wolf Zone and Goat Ridge to the north (see Figure 6, Assessment Report 21168). Within this area, ankerite-limonite gossans trend obliquely across the east slope; these gossans contain quartz-carbonate veins, and breccia with pyrite, chalcopyrite, and locally sphalerite and galena. Wallrock alteration consists of chlorite-epidote-quartz and K-feldspar, with ankerite-limonite staining. Gypsum or anhydrite was noted occasionally. :
The Main zone is the locale on the Yeti property where the majority of copper mineralization occurs. Dimensions in the early 1990s of the mineralized area was 1600 metres north-south and 1200 metres east-west. Mineralization appears bounded to the south by a dominantly pyritic zone and to the east by a pyrite-pyrrhotite bearing tonalite intrusion related to the Middle Jurassic Three Sisters Plutonic Suite. To the north of the pass, a northwest trending fault has cut through the main zone and possibly dropped the northeast side. Chlorite and epidote altered hypabyssal volcanic rocks, with shear zones containing copper mineralization, also occur north of the Pass suggesting mineralized portions of the intrusion may underlie the volcanic and hypabyssal rocks in this area.
The east side of the Main ridge contains steeply east dipping shear zones and chlorite slickenside that suggest late normal movement occurred. There is talus and snow cover in the Basin below this face preventing direct observation of the intrusive contact. The medium grained intrusion occurs in the Pass, and to the east and southwest of the Basin, and serpentinite, talc and a diatreme occur along the east side of the Main Ridge; the attitude and location of these rocks suggests the intrusion may underlie most of the Basin. Structurally controlled alteration and mineralization appears to be strongest in proximity to the intrusion;
The mineralized quartz veins range in width from 1 millimetre to over 1 metre, and many can be traced 10 to 50 metres along strike. The Crow Vein (Blizzard showing (new minfile 2020)) was traced for approximately 200 metres with widths from 10 centimetres to 1.2 metres and assays of up to approximately 74 grams per tonne gold over 1.0 metre have been obtained (Assessment Report 22273). Gold values are generally elevated in volcanic rocks beyond the intrusive contact.
The 1992 work area of Toscano outlined an area, 1,600 metres long by 1,200 metres wide, containing strong copper, gold and nickel mineralization. Chip sampling returned values up to 36 grams per tonne gold, 1.94 per cent copper and 5.6 grams per tonne silver over 1.0 metre (92K-61); other samples graded 0.78 gram per tonnne gold and 0.22 per cent copper over 5 metres (Assessment Report 22773).
Preparatory work indicated that in addition to the 600 meter long mineralized zone (referred to as the Main Zone) , the Yeti Area includes several additional mineralized zones (referred to as the Comfort Zone, the Wolf Zone, and the North Ridge) which extend the overall strike length of the Yeti mineralized zone to roughly 3 kilometers. Parallel mineralized zones to the west of the Main Zone include Eagle Creek / Blizzard Zone / (Blizzard (Crow Vein). Overall the Yeti Target measures 3,000 meters by up to 1,000 meters.
Three of the 5 rock samples assayed in 2018, to coroborate 1990 nickel in ultramafics, assayed high in nickel and chromium. Sample 6378841 359315 assayed 1250 ppm (0.125 per cent) nickel and 761 ppm (0.076 per cent) chromium, sample 6378919 359307 assayed 584 ppm (0.058 per cent) nickel and 421 ppm (0.042 per cent) chromium, sample 6378841 359308 assayed 1205 ppm (0.12 per cent) nickel and 488 ppm (0.049 per cent) chromium (Assessment Reports 38752 and 37037 (assay sheets)).
Work History.
In the early 1990s Schellex Gold Corp. and various other junior mining companies (including Toscana Resources) carried out reconnaissance scale prospecting and sampling in the area referred to as the Yeti Prospect. Shellex reportedly identified a north trending, 300 hundred meter wide quartz and carbonate stockwork zone with copper and gold mineralization that was traced for over 600 meters.
In 1990, Coast Mountain Geological and Quest Canada Exploration Ltd. performed a reconnaissance stream sediment survey, revealing several multi-element anomalies from tributary streams of the West Yehiniko and Yehiniko rivers. In 1992, Toscana Resources completed a program of prospecting, geological mapping and sampling on the Yehiniko property.
In 1995, Econ Ventures sampled along an 800 metre contour till line with samples taken every 25 metres from the north eastern edge of the main zone near “The Pass” to 100 metres before the beginning of the Comfort Zone to the south west (Assessment Report 24659). Four distinct showings of alteration and/or mineralization stretch from Comfort Zone (104G 196) and head north through to the Main Zone (104G 194), the “Wolf Zone” and to the “North Ridge” area, an approximate distance of 3 kilometres. Seven short lines totalling 1037.5 metres of VLF-EM data were collected along the length of the Main Zone in order to check for any hidden shear zones. Three of the lines were successful in delineating two or more conductive zones which correlated with shears as mapped during the program. During the 1995 program additional soil sampling was done at the North Ridge area to check the quality of this previous work and to better isolate the known gold, zinc, cobalt, chrome and nickel soil anomalies. Lower grade “listwanite” type alteration occurs but the quartz and quartz carbonate stockwork at the North Ridge zone is barren.
In 2005 and 2006, Gillian Wells staked the GW 1 to GW 4 over the Yeti prospect (104G 194) which were then optioned to Consolidated Gold Win Ventures who conducted a geological reconnaissance mapping and sampling survey (Assessment Report. Sixty eight rock samples were collected and two Induced Polarization (IP) recon lines were conducted along the most accessible areas at the base of the main mineralized ridge (Assessment Report 29219).
Since the Property was acquired in 2007, Brades has completed an airborne geophysical survey in the Strata Creek Area, repaired an existing air strip and constructed a base camp in the northeastern part of the property (Yeti Area), completed helicopter assisted programs of geological mapping and verification sampling within the Yeti Area, prepared detailed 3D elevation models for the main areas of interest and completed a detailed structural interpretation to identify the structural controls on mineralization.
In the late 2000s, five main areas of interest within the BRC Property of Brades Resources Ltd covered a large area between Dokdaon Creek and Yeheniko Creek. These are referred to as the Dok 35 area, the Teck Area, the Yeti Area, the Strata Creek Area, and the Yehiniko East Area. BRC carried out a preliminary exploration program in the fall of 2007 consisting of airborne geophysical surveys and a limited program of verification sampling. Airborne surveys were carried out by Fugro Airborne Surveys primarily in the Strata Creek area and verification sampling was carried out in the southwestern part of the claim group in the area referred to as the Teck area that contained the Marg West (104G 058) and Marg East (104G 089) showings. In 2010, Brades Resources completed detailed digital topographic maps of the Teck and Yeti areas and compiled all historic rock, soil and stream sampling data for the entire BRC Property. Later in 2010, Brades conducted detailed topographic mapping to cover additional parts of the BRC property and several helicopter assisted site visits were completed to verify mineralization reported in the central part of the BRC property. A total of 24 rock samples were collected. In late 2010 to January 2011 a detailed structural analysis of the Teck area and the Yeti area was carried out using shaded hillside imagery technology.
To meet minimum exploration work requirements for 2015 commenced field planning and technical mapping in early June with field work completed as part of a regional program carried out between August 17 and August 27, 2015.
In 2018, owner Carl Von Einsiedel arranged for a high resolution helicopter-borne aeromagnetic and radiometric survey to be flown over the Yeti Block. It consisted of 78 line kilometres, including 71 line kilometres flown at an orientation of 002/182 degrees and 7 kilometers of tie lines flown at 092/272 degrees. The line spacing was 200 meters and the survey was flown at an average survey height of 50.7 meters above terrain. Also in 2018, in order to verify the reported high nickel values from 1990, the current owners collected 9 rock and soil southern boundary of the 1990 soil survey grid.
See DOK 35 (DOKX) (104G 039) for related details. The project were all of 1 property until intervening claims were dropped.
